Joint arrangement



l. BEcKwITH Y'JOINT'ARRANGEMENT L Marh 14, 1939.5

Filed Deo. 2, 1957 Jzenf Patented Mar. 14, 1939 y UNITED STATES PATENTOFFICE vJOINT ARRANGEMENT Louis I. Beckwith, Brookline, Mass.

Application December 2, 1937, Serial No. 177,733 i 2 Claims. (Cl.211-135) This invention relates to animproved joint conupright, a clampscrew 6 being provided to clamp struction for rack assemblies, and moreparticuthe bracket at the desired vertical position on larly to thearrangement yof a supporting bracket the upright. The braeket 4preferably iS provided and of a, Cooperating shelf which is associatedWith a Vertical Wall 1 Which is disposed Substan- 5 t with the bracket,tially tangentially to the opening 5,' and which is 5 The presentinvention is particularly suitable provided with a substantiallyvertical inner surfor employment in self-supporting, knock-down face 8.In practice. the bracket 4 may be a caststructures having separablejoints, such as metal ing and the Wall 8 may have a Slight downward meatracks and other racks designed for heavy and inward inclination. Thebracket iS 2.150 DIO- 10 loads where rigidity and prevention ofv playbevided with a second substantially vertical sur- 10 tween the parts areimportant requisites. face I0 TlliS Sli-rface may alSO have a Slight Inaccordance with this invention, an improved inclination as shown.Between the surfacesl 8 and bracket is provided, which is adapted to beSel0 a horizontal web l5 is provided at the lower cured to an uprightand which provides a vertical part 0f the bracket. and an integral bossor flange wall extending substantially tangentiaily to an I9 extendsupwardly from the Web, the ends of 15 opening through which the uprightmay be eX.. this ange being arranged to cooperate with the tend, Thebracket also is provided with a second surfaces 8 and I0 in definingnarrow vertical slots. substantially vertical surface extending at rightPreferably the ends Of the flange I9 llaVe a Slight angles to thevertical wan, there being a noridownward inclination, as shown in Figs.1 and 4,

2o Zontal web between the wall and surface. A boss and the flange maypreferably haVe a Curved Outer 20 or lug, which is preferably arcuate,extends up'- Surface arid may be 0f arcuate form. wardly from this weband has ends cooperating In accordance with this invention, a shelf iswith the vertical surfaces in defining the Walls of Supperted by abracket 4 at eac-h of its corners. narrow slots for receiving thedepending marginal The Shelf may Preferably be fermed of metal andcanges of the sneu. The shelf preferamy may may have depending metalanecs to be received 25 have a, marginal frame formed by angle memin theSlots provided by each bracket 4. FOI' eX- bers, and its dependingmarginal anges are ample, aS Shown, theshelf 20 may have framepreferably provided with protuberances in the members in the ferm 0=fmetal angles 2|, which form of indents which engage in the slots of theare CODIleCted t0 each Other by rivets 22 at the bracket with awedge1ike action An arrangecorners of the shelf. Suitable strips 23 ofmetal 30 merit of this character thus permits the iirm may be roveted tothe horizontal flanges of opintertting engagement of the corners of theDOSite augleS, 0r arly Other Suitable webbing 0r shelf with the bracketwhile affording a construcsheet material may extend between the anglestion which is simple and relatively inexpensive to t0 provide theartile-Sl-lplJOI'l'filfliy Surface 0f the manufacture. Shelf- 35 In theaccompanying drawing; In accordance with this invention, the depend-Fig. 1 is a top plan View of a bracket constructing ilangeS 0f theangles 2| are provided with ined in accordance With this invention., theComer dents 24 Which are l'eCeVed ill the Vertical SlOtS 0f of the shelfwhichis'supported by the bracket bethe braCketS 4 With a Wedge-likeaction. As

40 ing indicated in dot and dash lines; shown particularly in Fig. 2,each indent is formed 40 Fig. 2 is an elevational View of the bracket S0that it provid-e5 all upwardly and outwardly assembly shown in Fig. 1, aportion of ythe shelf inclined Surface 25 and has a greater DFO- beingshown in section; tuberance from the plane of the flange near the Fig. 3is a perspective view of the corner porupper Dertien theree'f than nearthe lower por- 'tion of the shelf; and tion thereof. Accordingly, theindents may be 45 Fig. 4 is a perspective view of the bracket. receivedin the slots with a. wedge-like action,

The separable joint illustrated in the drawing thuS DreVehtIlgundesirable play between these is especially constructed for use inframes proparts as the shelf is fitted onto the bracket with vided withvertical uprights and horizontal the indents received in the slots inthe manner 5o shelves supported between the uprights. The indicated. Thelower surfaces of the horizontal 5o uprights preferably may be formed ofround flanges 0f the angles may be Supported upon the metal tubing, suchan upright I being shown. in upper parts Of the bosses I9, such anarrangement Fig. 2. Y being shown in Fig. 2.

In' accordance with this invention, a bracket 4 It is evident that thepresent invention affords may be provided with an opening 5 to receivethe a simple and inexpensive arrangement permitting 55 the firmengagement of a metal shelf with a supporting bracket in a knack-downconstruction of the type described.

I claim:

1. Bracket comprising a metal member having an opening through which acylindrical upright may extend and having a vertical wall substantiallytangential to said opening, the metal of the bracket affording asubstantially vertical surface extending inwardly at right angles to theinner surface of the Wall, there being a horizontal web extending fromsaid vertical surface to the wall, and an arcuate ange extendingupwardly from, said web but in spaced relation to the wall and surfaceto cooperate therewith in dening similar vertical slots extending for asubstantial fraction of the height of the bracket, said slots beinggradually tapered so that they are wider at their upper parts than attheir lower parts.

` ing metal flanges extending at right angles to each other and receivedin said slots, each of said flanges being provided with indentsyieldably tted into said slots with a Wedge-like action.

LOUIS I. BECKWITH.

